Ответ:

Распределение слов по группам:

VerbAdjectivePlaceFoodPerson / animal
run, fall, work, travelnice, funny, hard, sunny, hungrymountains, country, seasideeggs, berrieselephant, tourist, doctor

Дополнительные слова: verb — play, swim; adjective — happy, beautiful; place — park, beach; food — apples, sandwiches; person/animal — teacher, dog.